CVE-2026-42863

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the chatflow update endpoint of FlowiseAI. The endpoint allows clients to modify server-controlled properties such as deployed, isPublic, workspaceId, createdDate, and updatedDate when updating a chatflow object. Due to missing server-side validation and authorization checks, an authenticated user can manipulate internal attributes of a chatflow and reassign it to another workspace. This allows cross-workspace resource reassignment and unauthorized modification of deployment and visibility settings. This issue has been patched in version 3.1.2.

• CWE-284
• CWE-639
• CWE-915

• https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2Product, Release Notes
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5wxp-qjgq-fx6mExploit, Vendor Advisory
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5wxp-qjgq-fx6mExploit, Vendor Advisory

Published

Jun 8, 2026

Last Modified

Jul 23, 2026

Status

Analyzed

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